A versatile PIFA-mediated approach to structurally diverse pyrrolo(benzo)diazepines from linear alkynylamides
摘要:
The addition of the hypervalent iodine reagent PIFA [phenyliodine(III) bis(trifluoroacetate)] to a series of properly substituted N-(3-aminopropyl)alkynylamides results in the efficient formation of a functionalized 5-aroyl-2-pyrrolidinone skeleton. By proper manipulations of the N(1)-substituents, through consecutive deprotection and/or reductive amination steps, a second cyclization process occurs yielding the target heterocycles. As it will be disclosed, the overall process is open to structural modifications that gives rise to a series of pyrrolo(benzo)diazepine derivatives. (C) 2010 Elsevier Ltd. All rights reserved.
A versatile PIFA-mediated approach to structurally diverse pyrrolo(benzo)diazepines from linear alkynylamides
摘要:
The addition of the hypervalent iodine reagent PIFA [phenyliodine(III) bis(trifluoroacetate)] to a series of properly substituted N-(3-aminopropyl)alkynylamides results in the efficient formation of a functionalized 5-aroyl-2-pyrrolidinone skeleton. By proper manipulations of the N(1)-substituents, through consecutive deprotection and/or reductive amination steps, a second cyclization process occurs yielding the target heterocycles. As it will be disclosed, the overall process is open to structural modifications that gives rise to a series of pyrrolo(benzo)diazepine derivatives. (C) 2010 Elsevier Ltd. All rights reserved.
Novel library synthesis of 3,4-disubstituted pyridin-2(1<i>H</i>)-ones via cleavage of pyridine-2-oxy-7-azabenzotriazole ethers under ionic hydrogenation conditions at room temperature
作者:Romain Pierre、Anne Brethon、Sylvain A Jacques、Aurélie Blond、Sandrine Chambon、Sandrine Talano、Catherine Raffin、Branislav Musicki、Claire Bouix-Peter、Loic Tomas、Gilles Ouvry、Rémy Morgentin、Laurent F Hennequin、Craig S Harris
DOI:10.3762/bjoc.17.16
日期:——
disubstituted pyridine-2(1H)-one kinase hinge-binder motif proved to be more challenging than anticipated requiring a significant investment in route scouting and optimization. This full paper focuses on the synthesis issues that we encountered during our route exploration and the original solutions we found that helped us to identify two optimized library-style processes to prepare our large kinase inhibitor library
A versatile PIFA-mediated approach to structurally diverse pyrrolo(benzo)diazepines from linear alkynylamides
作者:Leticia M. Pardo、Imanol Tellitu、Esther Domínguez
DOI:10.1016/j.tet.2010.05.080
日期:2010.7
The addition of the hypervalent iodine reagent PIFA [phenyliodine(III) bis(trifluoroacetate)] to a series of properly substituted N-(3-aminopropyl)alkynylamides results in the efficient formation of a functionalized 5-aroyl-2-pyrrolidinone skeleton. By proper manipulations of the N(1)-substituents, through consecutive deprotection and/or reductive amination steps, a second cyclization process occurs yielding the target heterocycles. As it will be disclosed, the overall process is open to structural modifications that gives rise to a series of pyrrolo(benzo)diazepine derivatives. (C) 2010 Elsevier Ltd. All rights reserved.